Dental bone graft: indications, stages and healing

Why might the jaw lack bone?

The alveolar bone surrounds and supports the roots of the teeth. After an extraction, its shape changes: the ridge can lose width and height. Periodontal disease, trauma or certain anatomical situations can also reduce the volume available.

A lack of bone does not simply mean a jaw that is ‘too fragile’. An area can have enough height yet be too narrow for the implant position you want. Conversely, adequate width does not solve the problem of being very close to a nerve or a sinus.

The aim is to place the implant in a position compatible with the future tooth and with keeping it clean. The graft therefore belongs to a restoration plan. It should not be decided on simply to obtain more bone on an image, without explaining what that extra volume will make possible.

The leaflet from Cambridge University Hospitals on pre-implant grafting sets out this logic: the technique depends on the anatomy, on the scale of the reconstruction and on the implant plan. Our guide to the dental implant helps you understand the stage this reconstruction can prepare for.

How do you confirm that a graft is needed?

The work-up starts with a discussion and an oral examination. The practitioner analyses the gap left by the missing tooth, the neighbouring teeth, the gums and the contacts between the teeth. They also take account of your expectations, your general health and your ability to keep up with the treatment.

Imaging completes this examination. A panoramic X-ray gives an overall view; a CBCT scan provides a three-dimensional analysis that is useful for implant planning. The radiology recommendations presented by the American Dental Association in 2026 insist on examinations matched to the clinical situation, once the patient has been assessed.

Ask the practitioner to show you the defect on the images and to say whether it involves the width, the height or both. Have the obstacle to the placement you want explained, along with the other options available. That explanation makes the treatment far more concrete than a passing mention of ‘not enough bone’.

An image does not predict exactly how the surgery or the healing will go. The plan may involve adjustments, which should be explained beforehand. If the procedure proposed is a major one, or if opinions differ, a second opinion lets you compare the expected benefits and the constraints of the various solutions.

Bone graft and gum graft: what is the difference?

A bone graft concerns the mineral support. A gum graft concerns the soft tissues that cover the teeth and the implants. These procedures answer different problems, even though they can belong to the same pathway.

Gum recession therefore does not automatically mean that a bone graft will be needed. In the same way, a gum that looks nicely closed after the operation does not prove that the bone underneath is ready to receive an implant. What you can see and what matures deeper down follow different timescales.

On your treatment plan, have the procedures set out separately. Phrases such as ‘tissue reconstruction’ or ‘regeneration’ can cover several procedures. Knowing which tissue is being treated helps you understand the quote, the recovery expected and the reasons for any wait between appointments.

Which materials can be used?

Materials come from several different origins. An autograft uses your own bone. An allograft comes from a human donor and goes through a dedicated preparation chain. Xenografts use treated materials of animal origin. Synthetic substitutes are manufactured to act as a support for the reconstruction.

These materials can be used alone or in combination. The choice depends on the shape of the defect, the volume sought and the technique. No single material is automatically superior in every situation. On its own, the material does not replace the quality of the planning or the protection of the site while it heals.

Ask for the name, the origin and the role of the product proposed. If you have beliefs or preferences about products of animal or human origin, say so before the procedure. Any membrane used may have a different origin from the bone material: both pieces of information are useful.

Keep the product references in your file. This traceability does not turn the graft into a guaranteed result, but it does let you know exactly what was used. Words such as ‘natural’, ‘artificial’ or ‘premium’ are too vague to inform you properly.

When is your own bone harvested?

Harvesting inside the mouth can be considered when the volume needed allows it. It creates a second surgical site, and the recovery from that also has to be explained. The leaflet from Guy’s and St Thomas’ on minor grafting describes harvesting from another part of the jaw and the possible fixation of the graft.

A larger reconstruction may call for harvesting elsewhere in the body, from the hip for instance. It does not carry the same constraints as a small filling done in the dental chair. Anaesthetic, hospital stay, pain at the donor site and getting back to your activities all have to be considered together. The document devoted to major grafting details this difference in pathway.

Before agreeing to a harvest, ask why it is preferable in your case and which alternatives were studied. Also check who will monitor each operated area. The arrangements have to take account of your mobility, your work and the help available at home.

Filling the socket after extraction: what benefit can you expect?

Alveolar ridge preservation means treating the site left by an extracted tooth in order to limit changes in volume. It can use a filling material and suitable protection. This is something to think about at the time of the extraction, when a replacement is envisaged later on.

It does not guarantee that the bone will keep exactly its original shape. The 2021 Cochrane review reports that these techniques might limit some loss of height or width, but stresses that the evidence is highly uncertain and that no firm conclusion can be drawn for several long-term outcomes.

Filling the socket therefore does not guarantee that no further graft will be needed later. Nor should you conclude that it is pointless in every situation. Its value has to be discussed in the light of the site, the prosthetic plan and the alternatives.

If an extraction is planned, ask when the replacement will be reassessed and what choosing to preserve the socket, or not, involves. This discussion has to come before the procedure, because it influences the preparation and the materials needed.

Guided bone regeneration: what is the membrane for?

Guided bone regeneration, often shortened to GBR, aims to protect a space in which bone can form. A membrane separates the reconstruction area from the neighbouring soft tissues. A graft material can be added, depending on the defect to be corrected.

The membrane and the graft do not have the same function. The first acts as a barrier; the second helps support the reconstruction. Some membranes are resorbable, others have to be removed as part of the protocol. Ask whether an additional procedure is expected and when it will be discussed.

For a limited defect, this technique can accompany the placement of the implant. A larger reconstruction may call for a separate stage. Leeds Teaching Hospitals distinguishes between these situations according to the size of the bone deficit.

A visible membrane or an opening in the gum after the procedure is a reason to contact the team. Do not pull on the stitches and do not try to remove any material yourself. The practitioner has to examine the situation before deciding whether monitoring or treatment is needed.

Is a sinus lift an alternative to grafting?

A sinus lift, or sinus floor elevation, is a bone augmentation technique used in certain posterior areas of the upper jaw. It is therefore not a general ‘graft-free’ solution. It answers a lack of height beneath the sinus.

The principle is to lift the sinus membrane gently to create a space for the reconstruction. Depending on the bone remaining and on the technique, the implants can be placed in the same session or after maturation. Cambridge University Hospitals describes these different approaches.

Report any history of sinus problems and any symptoms present before the operation. The specific risks include perforation of the membrane, infection and, more rarely, a communication between the mouth and the sinus. A difficulty met during the procedure may make it necessary to change or postpone the programme.

After this procedure, you will be given particular precautions, especially about blowing your nose and about pressure changes. Have their duration spelt out, along with the conditions for resuming travel or planned activities. Advice for a graft carried out elsewhere in the mouth should not be transferred automatically.

Can the graft and the implant be placed on the same day?

That is possible in some situations. The decision depends in particular on how much bone is left to stabilise the implant and on the volume to be reconstructed. Placing both at the same time does not mean that the final tooth will be usable straight away.

When the defect is larger, the practitioner may carry out the reconstruction first, check how it matures, then place the implant. The integration of that implant and the prosthetic phase then have to be taken into account. The Cambridge leaflet on restorative implant dentistry explains why these stages can extend the pathway by several months.

Ask for a timetable that separates provisional dates from the clinical criteria for moving on to the next stage. ‘Implant planned for June’ is an estimate; ‘implant placed once the reconstruction is judged sufficient’ describes the medical condition. The two have to be consistent.

Waiting time is not necessarily a sign of failure or complication. It can be part of the planned treatment. A change to that timescale, however, deserves a clear explanation, so that you know what is being monitored and when the next review will take place.

How long does healing take?

Recovery after the operation, closure of the soft tissues and bone maturation have to be distinguished from one another. Pain and swelling can settle well before the site is ready for the next stage. The stitches disappearing does not mark the end of the process deeper down.

Bone reconstruction is generally assessed over several months. How long it takes depends on the technique, the volume treated and your own situation. A single timescale of a few weeks cannot be applied to every graft. The timetable must also separate the moment when the implant can be placed from the moment when the final prosthesis can be made.

As a guide, the Cambridge University Hospitals leaflet on grafting describes maturation of four to twelve months, depending on the reconstruction. That range is not a compulsory timescale for every patient: your surgeon sets the timetable that suits the procedure planned and the healing checks.

Check-ups combine the clinical examination and whichever further investigations are judged useful. They serve to verify how the treatment is progressing and to decide what comes next. You do not have to test the strength of the site yourself by pressing on it or deliberately chewing hard food.

If you need a temporary solution while you wait, raise the question before surgery. An existing prosthesis may need adjusting to avoid pressing on the operated area. Looking presentable and protecting the site have to be organised together.

What risks and which signs should raise the alarm?

A graft can cause pain, swelling, bruising and bleeding. Complications are also possible: infection, opening of the wound, exposure of the material, insufficient reconstruction or partial loss of the graft. Altered sensation, depending on the surgical site, can be temporary or, more rarely, lasting.

A failure is not simply a ‘rejection’ comparable to that of an organ transplant. The practitioner has to establish what happened before proposing further treatment. An inadequate graft can lead to reviewing the technique, the timetable or the prosthetic plan.

Contact the team quickly if pain or swelling gets worse, or in case of fever, discharge, a new bad smell or an opening in the wound. Also report any lasting change in sensation. Bleeding that does not stop despite the instructions you were given needs urgent assessment; difficulty breathing or swallowing is an immediate emergency.

Make sure you have the relevant contact details before you leave the practice. You should know the number to call during the day and the arrangements available in the evening or at the weekend, especially if you live far from where the procedure took place.

How do you prepare for treatment and protect the operated area?

A properly maintained mouth and the treatment of any infection are part of the preparation. Smoking can compromise healing and the result; ask for support to stop early enough. Your general health and your medicines have to be reviewed with the team.

Mention in particular any treatment for osteoporosis or for certain cancers that acts on bone. The American Dental Association points out the risk of medication-related osteonecrosis, the assessment of which depends on the indication and on the treatment received. That does not mean anyone treated for osteoporosis is unable to have implant treatment. Do not stop a medicine without a decision coordinated with whoever prescribed it.

After the procedure, follow the prescription and the advice matched to the surgery carried out. Have it spelt out how to clean the other teeth, when to start brushing the operated area again and how to use any mouthwash. An antiseptic does not remove the need for regular cleaning in the way prescribed.

Plan meals that fit the instructions you were given, without excessive pressure on the site. Ask when to go back to sport and to work, describing what your activity involves. Recovery from a major bone harvest is not managed in the same way as recovery from a small local filling.

Can a tooth be replaced without a bone graft?

Sometimes a different position or a different type of implant can be discussed. Short, narrow or tilted implants have indications of their own; they do not get round every bone deficit. A ‘graft-free’ proposal has to explain how the stability, the function and the maintenance of the restoration will be ensured.

Other options can also be considered: a bridge supported by teeth, a removable prosthesis or, in certain situations, no immediate replacement at all. Every solution has its constraints and has to be weighed against the expected benefit of bone reconstruction.

The right question is therefore what the graft brings to your plan and what compromise you would accept in order to avoid it. Our dental care section lets you place the implant among the restoration options. A more complex technique is not automatically preferable to a simpler solution suited to your needs.

Price and quotes: what should you have spelt out?

The cost depends on the area, the volume to be reconstructed, the materials, any harvesting and the setting of the procedure. A small filling, a sinus lift and a reconstruction with substantial harvesting are not equivalent procedures. A figure announced without these details is hard to interpret.

Ask for a quote that separates the graft, any membrane, the examinations, the check-ups and the later implant stages. Check whether removing a device or adjusting a temporary prosthesis is planned. Also have it spelt out how any additional treatment would be handled if the bone result turned out to be insufficient.

For any reimbursement, send the full quote to your health insurer and to any top-up cover, and ask for a written answer about your own situation. Do not confuse the possible reimbursement of a prosthetic restoration with that of all the procedures that come before it.

Before deciding, you should be able to restate three things: why the graft is being proposed, which alternatives exist and how its result will be checked. A clear plan links the operation to the tooth or the prosthesis expected, with a realistic timetable and follow-up that is genuinely accessible.

Sources

Cambridge University Hospitals NHS Foundation Trust. (2024). Bone grafting for dental implants. https://www.cuh.nhs.uk/patient-information/bone-grafting-for-dental-implants/

American Dental Association. (2026). New ADA recommendations confirm dental imaging most effectively used in moderation. https://adanews.ada.org/ada-news/2026/january/new-ada-recommendations-confirm-dental-imaging-most-effectively-used-in-moderation/

Guy’s and St Thomas’ NHS Foundation Trust. (2024). Bone grafting for dental implants: Minor bone grafting. https://www.guysandstthomas.nhs.uk/health-information/bone-grafting-dental-implants/minor-bone-grafting

Guy’s and St Thomas’ NHS Foundation Trust. (2024). Bone grafting for dental implants: Major bone grafting. https://www.guysandstthomas.nhs.uk/health-information/bone-grafting-dental-implants/major-bone-grafting

Atieh, M. A., Alsabeeha, N. H. M., Payne, A. G. T., Ali, S., Faggion, C. M., Jr., & Esposito, M. (2021). Interventions for replacing missing teeth: Alveolar ridge preservation techniques for dental implant site development. Cochrane Database of Systematic Reviews, (4), CD010176. https://www.cochrane.org/evidence/CD010176_what-works-best-preserve-jaw-bone-after-tooth-extraction

Leeds Teaching Hospitals NHS Trust. (2025, 4 juin). Dental implants. https://www.leedsth.nhs.uk/patients/resources/dental-implants/

Cambridge University Hospitals NHS Foundation Trust. (2024). Sinus lift procedures. https://www.cuh.nhs.uk/patient-information/sinus-lift-procedures/

Cambridge University Hospitals NHS Foundation Trust. (2025, 14 janvier). Dental implants in restorative dentistry. https://www.cuh.nhs.uk/patient-information/dental-implants-in-restorative-dentistry/

American Dental Association. (s. d.). Osteoporosis medications and medication-related osteonecrosis of the jaw. https://www.ada.org/resources/ada-library/oral-health-topics/osteoporosis-medications